SumoBrain is FREE! SumoBrain offers cross-collection searching, portfolios, alerts, and other collaboration tools, as well as bulk PDF download capabilities. Sumobrain caters to intellectual property professionals, attorneys, and users in the corporate world. While SumoBrain was conceived as a subscription service, we have decided to take the radical step of making SumoBrain completely free. As long as we can support its costs without subscription fees, it will remain free indefinitely
Picasa: The Google-owned photo service automatically groups photos with similar faces. Users can then more easily label the photos with the names of those who appear in them.
Infochimps.org
Free Redistributable Rich Data Sets
There are many sources to find out something about everything. Until now, there’s been no good place for you to find out everything about something.
The infochimps.org community is assembling and interconnecting the world's best repository for raw data -- a sort of giant free allmanac, with tables on everything you can put in a table. Built by data nerds, used by data nerds, it's a central source for the information you need to power the projects the world needs.